Variable expression for 3x+7
1 answer:
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Reflection across the x-axis:
y = − f ( x ) y = -f(x) y=−f(x) The concept behind the reflections about the x-axis is basically the same as the reflections about the y-axis.
Answer:
the charge is $5 dollars per mile
Step-by-step explanation:
He truck is rented at $40 per day plus they charge per mile of use the truck travel 15 miles in one day and the total charge was 115
LEt x be the charge in dollars per hour
Initial charge is 40 and 15 miles travelled in one day
total charge = 15x + 40
Given : total charge is 115
So the equation becomes
Now we solve for x
Subtract 40 from both sides
Divide both sides by 15
x= 5
so , the charge is $5 dollars per mile